bbingold



(No Model.) I 2 Sheets-Shet 1. J. H. BRINGOLD.

REVOLVING WIEE BRUSH WHEEL.

No. 367,591. Patented Aug. 2, 1887.

ifia vendor.

2 Sheets-Sheet 2. I

D L O G N I D B H J m d 0 M 0 m REVOLVING WIRE BRUSH WHEEL.

, Patented Aug. 2, 1887.

,w an Mme,

UNITED STATES PATENT OFFICE.

JOHN H. BRINGOLD, OF ALBANY, NEV YORK.

REVOLVING WIRE-BRUSH WHEEL.

SPECIFICATION forming part of Letters Patent No. 367,591, dated August 2, 1887.

Application filed October 10, 1885. Serial No.1'79,5l8. (No model.)

To all whom/it may concern.-

jointed bunches of brush-wires bent to V shape, and having support from the elastic walls of said radial perforations in such a manner that each wire in each bunch is free to yield in its whole length from its outer end to its jointed connection with a pivot-form key, which is employed to hold the bow ends of the wires; and, secondly, to provide specific means by which the brush-wires will be readily applied to the hub and be firmly secured there with.

Heretofore revolving or wheel wire'brushes for cleaning castings have been made to consist of a metal hub holding a series of bunches of brush-wire, in which the lower end por-' tions of the wires in each bunch were tightly held together by surrounding metal, while the free end portions of the bruslrwires were permitted to yield. In some cases these tightlyclamped bunches of wire were surrounded by bushings of leather tightly packed or clamped between the walls of the perforation receiving the bunches and the bunches themselves, so that the lower portions of the wires were rigidly held from moving. In these old brushwheels these tightly-clamped wires in the respective bunches would after a few hours use become crystallized to such an extent at a distance of about one inch (more or less) from the point of'their tight clasp or rigid holding by the surrounding metal or leather, and break off at or near a line with the plane of the outer surface of the metal or leather edge clamping the bunches, and thereby render the brush-wheel useless.

The object of my invention is to overcome these defects and securely hold the wires with the hub, while they will be free to vibrate or Fig. 3 is a sectional view taken in the transverse and at line 2 in Fig. 1. Fig. at is a view of a section of the hub from its outs1de,showing the perforations receiving the brush-wires.

Fig. 5 is a view of the brush-wires, showing their form and relative arrangement. Fig. 6 is a View of a section of the hub from its outer side, and showing a modification of form of perforations holding the brush-wires when ap plied and secured.

The same letters of reference refer to like parts throughout the several views.

A is the hub of the brush-wheel, which huh is made preferably of a circular form and of elastic rubber, and with a diameter of about six inches and a thickness of about one and one -half inch, more or less. hub from side to side is central perforation, a, which is preferably about three inches in diameter. Made also in this hub are a series of radial perforations, a, which extend from the central perforation outward through to the periphery, with their radial side walls flaring so that the said perforation will be wider at the periphery of the hub than at the bottom of thesame, as shown in Figs. 2 and 6. The side and end walls of these radial perforations are preferably solid with each other, and

the wholehub with these several perforations posite each perforation a, as shown in Fig. 4:.

C are bunches of brush-wires c c, which are inserted in the respective radial perforations Made in this a, and secured from being drawn out by the metal ring 13, holding with the bows of the bunched wires, as shown. These bunches are each composed of from one hundred to one hundred and twenty wires, preferably about nine inches each in length and bent in a V- shaped form, so that each of these wires will make two branches, as shownin Fig. 5. These wires are about one-sixteenth of an inch in width and about one thirty-second of an inch in thickness, and made of steel and tempered with spring temper. The perforations a receiving the bunched wires are made with a length from end to end of about one and one quarter inch, and with a width from side to side of about three-quarters of an inch, and these V-shaped brushwires are arranged against the metal holding-piece B from its i11- ner side in part by a first series, and in a second part by a second series drawingon the bows of the first, and a third series on the bows of the second, and so on, with a sufficient number of series for filling the perforations full without packing. The diameter of the central perforation, a, is of such sufficient dimensions as to permit thesebow-shaped wires to be slipped over the holding-piece B and into theradial perforations a, free ends first, as shown.

D is a tubular-form back,which is made with a diameter tonicelyfit and fill all around against the back of the bows of the respective bunches G of brush-wi res, as shown, and is made with a length a little less than the length of the rubber hub from side to side. This tubular back when in place holds the bunches of brush-wire from being shoved back, while the holdingpiece B prevents them from being drawn forward.

E are clampingplates made each with a rimflange, c, all aroundon their facing sides, and with a central flange, 6, around the central openings, E, in said clamping-plates. These ri1n-flanges e operate to hold the rubber hub A central to the central perforation, E, while the latter perforation receives the shouldered portion of the spindle 1 which is to revolve this brush-wheel.

F is a screw-threaded clamping-nut screwed on the screw-threaded end portion of spindle E and tightly against the outer one of the clamping-plates E, as shown in Fig. 3.

By my above-described improvements the bunches have made with them laminated bows, which pivot on the pivot-like piece B and permit each wireto freely bend or vibrate from flexible bases and from curved holdingpieces without the least liability of their becoming crystallized,while:the brushing portions of the wires in each bunch will mutually support in an elastic manner each other, while they are together supported in a yielding and elastic manner from the side walls of the perforations receiving the bunches.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s-

1. In a wire brush, the combination, with hub A, provided with a central perforation and a series of radial perforations having flaring elastic sides, and a series of laminated bunches, O, of tempered flat steel wire, of the pivot-like holding-piece B, engaging with the loops of the bow ends of the respective bunches, and the bow-supporting piece D, all substantially as and for the purposes set forth. 4

2. In a wire brush, the combination, with the hub A, having central perforation, a, and a series of radial perforations, a a, having elastic flaring sides, and the series of laminated bu nches, O O, of tempered steel wire, and holding-piece B, tubular backing-piece D, clamping-plates E E, provided each with a central perforation, and a revolving shaft or spindle provided with a shoulder or collar and a clamping-nut, all substantially as and for the purposes and operations set forth.

JOHN H. BRINGOLD.

Vitnesses:

ALEX. SELKIRK, ISAIAH B. J OHNSON. 

